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// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

package org.apache.doris.nereids.hint;

import org.apache.doris.nereids.trees.expressions.Expression;

import java.util.List;
import java.util.Objects;

/**JoinSaltInfo*/
public class JoinSkewInfo {
    private final Expression skewExpr;

    private final List<Expression> skewValues;

    private final boolean isSuccessInSkewRewrite;

    public JoinSkewInfo(Expression skewExpr, List<Expression> skewValues, boolean isSuccessInSkewRewrite) {
        this.skewExpr = Objects.requireNonNull(skewExpr, "Skew expr cannot be null");
        this.skewValues = Objects.requireNonNull(skewValues, "Skew values cannot be null");
        this.isSuccessInSkewRewrite = isSuccessInSkewRewrite;
    }

    public JoinSkewInfo withSuccessInSaltJoin(boolean success) {
        return new JoinSkewInfo(skewExpr, skewValues, success);
    }

    public JoinSkewInfo withSkewExpr(Expression expr) {
        return new JoinSkewInfo(expr, skewValues, isSuccessInSkewRewrite);
    }

    public Expression getSkewExpr() {
        return skewExpr;
    }

    public List<Expression> getSkewValues() {
        return skewValues;
    }

    public boolean isSuccessInSkewRewrite() {
        return isSuccessInSkewRewrite;
    }

    @Override
    public boolean equals(Object that) {
        if (this == that) {
            return true;
        }
        if (that == null || getClass() != that.getClass()) {
            return false;
        }
        JoinSkewInfo other = (JoinSkewInfo) that;
        return skewExpr.equals(other.skewExpr) && skewValues.equals(other.skewValues)
                && isSuccessInSkewRewrite == other.isSuccessInSkewRewrite;
    }
}
